John Kelaher/Stalag 17B

Searching for any information about my uncle, John J. Kelaher. He was born in Brooklyn, NY and was in the Army Air Corps. John passed away in 1961. He was either a tail gunner or a ball turret gunner. I do not know what squad, unit or command he was with. Nor do I know where they were stationed out of. I believe he flew in either B-17's or B-29's. He was nicknamed "Shorty Kelaher", and family legend has it that he was friends with and flew with Clark Gable. John was shot down over Germany, sometime in 1943 and was a POW in Stalag 17B. I do have his service number. Any information or insight would be greatly appreciated. I am his closest living relative. Please email me at katwalker63@yahoo.com.